All things considered, the D80 operates pretty quickly. It's one of the faster models we've seen at copying and resizing images, and it can render large, full-size photos without hesitation. Only the index thumbnail display can get annoyingly slow, and it won't let you interrupt it until it's rendered all the thumbs on the screen.
I really like the display quality of this frame. With 800x600 resolution and a 4:3 aspect ratio, photos look sharp enough, with few jaggies. The D80 has a bit better dynamic range than I'm used to seeing; highlights and shadows render pretty well, colors and skin tones are pretty accurate, and there's little visible color contouring. As with all LCD frames, when the frame is positioned vertically the viewing angle on one side is only about 25 degrees before the image inverts/disappears.
Though it's a bit pricey for the basic features, the Sony 8-inch Digital Photo Frame DPF-D80 does provide everything most users probably want, especially the more technologically averse, as well as above average display quality.